Online PHP editor | output for qXNrkQ

@ 2017-09-30T16:16:12Z

<?php

$arr = Array
(
    "chann_1" => 155.755,
    "chann_2" => 154.61,
    "chann_3" => 156.719,
    "chann_4" => 156.727,
    "chann_5" => 155.797,
    "chann_6" => 157.615,
    "chann_7" => 154.257,
    "chann_8" => 151.724,
    "chann_9" => 156.549,
    "chann_10" => 156.594,
    "chann_11" => 157.56,
    "chann_12" => 156.405
);

Arsort($arr);
$keys = array_keys($arr);
Echo $keys[round(count($keys)/2)];

Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: chann_12
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 chann_12

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